1
GATE EE 2000
Subjective
+5
-0
Consider the state equation $$\mathop X\limits^ \bullet \left( t \right) = Ax\left( t \right)$$
Given : $${e^{AT}} = \left[ {\matrix{ {{e^{ - t}} + t{e^{ - t}}} & {t{e^{ - t}}} \cr { - t{e^{ - t}}} & {{e^{ - t}} - t{e^{ - t}}} \cr } } \right]$$

(a) Find a set of states $${x_1}\left( 1 \right)$$ and $${x_2}\left( 1 \right)$$ such that $${x_1}\left( 2 \right) = 2.$$
(b) Show that $$\,{\left( {s{\rm I} - A} \right)^{ - t}} = \Phi \left( s \right) = {1 \over \Delta }\left[ {\matrix{ {s + 2} & 1 \cr { - 1} & s \cr } } \right];$$ $$\Delta = {\left( {s + 1} \right)^2}$$
(c) From $$\Phi \left( s \right),$$ find the matrix $$A$$.

2
GATE EE 2000
MCQ (Single Correct Answer)
+2
-0.6
The minimal product-of-sums function described by the $$K$$-map given in Fig. GATE EE 2000 Digital Electronics - Combinational Circuits Question 8 English
A
$$\overline A \overline C $$
B
$$\overline A + \overline C $$
C
$$A+C$$
D
$$AC$$
3
GATE EE 2000
MCQ (Single Correct Answer)
+2
-0.6
A dual-slope analog-to-digital converter uses an $$N$$-bit counter. When the input signal $${V_a}$$ is being integrated, the counter is allowed to count up to a value:
A
equal to $${2^N} - 2$$
B
equal to $${2^N} - 1$$
C
proportional to $${V_a}$$
D
inversely proportional to $${V_a}$$
4
GATE EE 2000
Subjective
+2
-0
The counter shown in Fig. is initially in state $${Q_2} = 0,\,{Q_1} = 1,\,{Q_0} = 0.$$ With reference to the $$CLK$$ input, draw waveforms for $${Q_2},{Q_1},{Q_0}$$ and $$P$$ for the next three $$CLK$$ cycles. GATE EE 2000 Digital Electronics - Sequential Circuits Question 18 English
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